31479212097 has 6 divisors (see below), whose sum is σ = 45469973042. Its totient is φ = 20986141392.

The previous prime is 31479212071. The next prime is 31479212111. The reversal of 31479212097 is 79021297413.

It can be written as a sum of positive squares in only one way, i.e., 29888877456 + 1590334641 = 172884^2 + 39879^2 .

It is not a de Polignac number, because 31479212097 - 2¹⁶ = 31479146561 is a prime.

It is a super-2 number, since 2×31479212097² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31479212797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1748845108 + ... + 1748845125.

Almost surely, 2^31479212097 is an apocalyptic number.

It is an amenable number.

31479212097 is a deficient number, since it is larger than the sum of its proper divisors (13990760945).

31479212097 is a wasteful number, since it uses less digits than its factorization.

31479212097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3497690239 (or 3497690236 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 31479212097 in words is "thirty-one billion, four hundred seventy-nine million, two hundred twelve thousand, ninety-seven".