31401403010 has 32 divisors (see below), whose sum is σ = 57060048240. Its totient is φ = 12441673728.

The previous prime is 31401402959. The next prime is 31401403049. The reversal of 31401403010 is 1030410413.

It can be written as a sum of positive squares in 8 ways, for example, as 248094001 + 31153309009 = 15751^2 + 176503^2 .

It is a super-2 number, since 2×31401403010² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 31401403010.

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, 414776 + ... + 484604.

Almost surely, 2^31401403010 is an apocalyptic number.

31401403010 is a deficient number, since it is larger than the sum of its proper divisors (25658645230).

31401403010 is a wasteful number, since it uses less digits than its factorization.

31401403010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70262.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31401403010 its reverse (1030410413), we get a palindrome (32431813423).

The spelling of 31401403010 in words is "thirty-one billion, four hundred one million, four hundred three thousand, ten".