31401430302040 has 32 divisors (see below), whose sum is σ = 71621070490080. Its totient is φ = 12388509487872.

The previous prime is 31401430302023. The next prime is 31401430302091. The reversal of 31401430302040 is 4020303410413.

It is a junction number, because it is equal to n+sod(n) for n = 31401430301996 and 31401430302014.

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, 5376954324 + ... + 5376960163.

It is an arithmetic number, because the mean of its divisors is an integer number (2238158452815).

Almost surely, 2^{31401430302040} is an apocalyptic number.

It is an amenable number.

31401430302040 is an abundant number, since it is smaller than the sum of its proper divisors (40219640188040).

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

31401430302040 is a wasteful number, since it uses less digits than its factorization.

31401430302040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10753914571 (or 10753914567 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31401430302040 its reverse (4020303410413), we get a palindrome (35421733712453).

The spelling of 31401430302040 in words is "thirty-one trillion, four hundred one billion, four hundred thirty million, three hundred two thousand, forty".