31408673451 has 16 divisors (see below), whose sum is σ = 42041748000. Its totient is φ = 20857483008.

The previous prime is 31408673449. The next prime is 31408673551. The reversal of 31408673451 is 15437680413.

It is a happy number.

It is not a de Polignac number, because 31408673451 - 2¹ = 31408673449 is a prime.

It is a super-3 number, since 3×31408673451³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (31408673441) 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, 1028815 + ... + 1058903.

It is an arithmetic number, because the mean of its divisors is an integer number (2627609250).

Almost surely, 2^31408673451 is an apocalyptic number.

31408673451 is a deficient number, since it is larger than the sum of its proper divisors (10633074549).

31408673451 is a wasteful number, since it uses less digits than its factorization.

31408673451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31438.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 31408673451 in words is "thirty-one billion, four hundred eight million, six hundred seventy-three thousand, four hundred fifty-one".