31123553052 has 24 divisors (see below), whose sum is σ = 72687854736. Its totient is φ = 10365056128.

The previous prime is 31123553051. The next prime is 31123553059. The reversal of 31123553052 is 25035532113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123553051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168983 + ... + 1195310.

It is an arithmetic number, because the mean of its divisors is an integer number (3028660614).

Almost surely, 2^31123553052 is an apocalyptic number.

It is an amenable number.

31123553052 is an abundant number, since it is smaller than the sum of its proper divisors (41564301684).

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

31123553052 is a wasteful number, since it uses less digits than its factorization.

31123553052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365397 (or 2365395 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 31123553052 in words is "thirty-one billion, one hundred twenty-three million, five hundred fifty-three thousand, fifty-two".