31401033404140 has 48 divisors (see below), whose sum is σ = 67248173486592. Its totient is φ = 12312086881536.

The previous prime is 31401033404009. The next prime is 31401033404149. The reversal of 31401033404140 is 4140433010413.

It is a happy number.

It is a super-2 number, since 2×31401033404140² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31401033404099 and 31401033404108.

It is not an unprimeable number, because it can be changed into a prime (31401033404149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12474099 + ... + 14778538.

It is an arithmetic number, because the mean of its divisors is an integer number (1401003614304).

Almost surely, 2^{31401033404140} is an apocalyptic number.

It is an amenable number.

31401033404140 is an abundant number, since it is smaller than the sum of its proper divisors (35847140082452).

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

31401033404140 is a wasteful number, since it uses less digits than its factorization.

31401033404140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27253786 (or 27253784 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31401033404140 its reverse (4140433010413), we get a palindrome (35541466414553).

The spelling of 31401033404140 in words is "thirty-one trillion, four hundred one billion, thirty-three million, four hundred four thousand, one hundred forty".