31401948 has 12 divisors (see below), whose sum is σ = 73271240. Its totient is φ = 10467312.

The previous prime is 31401943. The next prime is 31401961. The reversal of 31401948 is 84910413.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308403 + ... + 1308426.

Almost surely, 2^31401948 is an apocalyptic number.

It is an amenable number.

31401948 is an abundant number, since it is smaller than the sum of its proper divisors (41869292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31401948 is a wasteful number, since it uses less digits than its factorization.

31401948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616836 (or 2616834 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 31401948 is about 5603.7441055066. The cubic root of 31401948 is about 315.4899505624.

The spelling of 31401948 in words is "thirty-one million, four hundred one thousand, nine hundred forty-eight".