31523642454 has 16 divisors (see below), whose sum is σ = 63049228992. Its totient is φ = 10507556808.

The previous prime is 31523642429. The next prime is 31523642497. The reversal of 31523642454 is 45424632513.

It is a super-2 number, since 2×31523642454² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210477 + ... + 327639.

It is an arithmetic number, because the mean of its divisors is an integer number (3940576812).

Almost surely, 2^31523642454 is an apocalyptic number.

31523642454 is an abundant number, since it is smaller than the sum of its proper divisors (31525586538).

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

31523642454 is a wasteful number, since it uses less digits than its factorization.

31523642454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162011.

The product of its digits is 345600, while the sum is 39.

The spelling of 31523642454 in words is "thirty-one billion, five hundred twenty-three million, six hundred forty-two thousand, four hundred fifty-four".