1011320402 has 4 divisors (see below), whose sum is σ = 1516980606. Its totient is φ = 505660200.

The previous prime is 1011320399. The next prime is 1011320407. The reversal of 1011320402 is 2040231101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1008634081 + 2686321 = 31759^2 + 1639^2 .

It is a super-3 number, since 3×1011320402³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1011320407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252830099 + ... + 252830102.

Almost surely, 2^1011320402 is an apocalyptic number.

1011320402 is a deficient number, since it is larger than the sum of its proper divisors (505660204).

1011320402 is an equidigital number, since it uses as much as digits as its factorization.

1011320402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505660203.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1011320402 is about 31801.2641572627. The cubic root of 1011320402 is about 1003.7593171584.

Adding to 1011320402 its reverse (2040231101), we get a palindrome (3051551503).

The spelling of 1011320402 in words is "one billion, eleven million, three hundred twenty thousand, four hundred two".