31403766145 has 16 divisors (see below), whose sum is σ = 38121684480. Its totient is φ = 24831773824.

The previous prime is 31403766131. The next prime is 31403766209. The reversal of 31403766145 is 54166730413.

It is a cyclic number.

It is not a de Polignac number, because 31403766145 - 2¹³ = 31403757953 is a prime.

It is a super-2 number, since 2×31403766145² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31403766098 and 31403766107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1398174 + ... + 1420456.

It is an arithmetic number, because the mean of its divisors is an integer number (2382605280).

Almost surely, 2^31403766145 is an apocalyptic number.

It is an amenable number.

31403766145 is a deficient number, since it is larger than the sum of its proper divisors (6717918335).

31403766145 is a wasteful number, since it uses less digits than its factorization.

31403766145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25544.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 31403766145 in words is "thirty-one billion, four hundred three million, seven hundred sixty-six thousand, one hundred forty-five".