2620401531 has 36 divisors (see below), whose sum is σ = 3947715576. Its totient is φ = 1544906880.

The previous prime is 2620401479. The next prime is 2620401547. The reversal of 2620401531 is 1351040262.

2620401531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2620401531 - 2¹⁷ = 2620270459 is a prime.

It is a super-2 number, since 2×2620401531² = 13733008367334287922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2620409531) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 494311 + ... + 499583.

It is an arithmetic number, because the mean of its divisors is an integer number (109658766).

Almost surely, 2^2620401531 is an apocalyptic number.

2620401531 is a deficient number, since it is larger than the sum of its proper divisors (1327314045).

2620401531 is a wasteful number, since it uses less digits than its factorization.

2620401531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372 (or 5324 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2620401531 is about 51189.8576966180. The cubic root of 2620401531 is about 1378.6561045227.

Adding to 2620401531 its reverse (1351040262), we get a palindrome (3971441793).

The spelling of 2620401531 in words is "two billion, six hundred twenty million, four hundred one thousand, five hundred thirty-one".