148797731 has 4 divisors (see below), whose sum is σ = 150188472. Its totient is φ = 147406992.

The previous prime is 148797713. The next prime is 148797739. The reversal of 148797731 is 137797841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137797841 = 61 ⋅2258981.

It is a cyclic number.

It is not a de Polignac number, because 148797731 - 2⁶ = 148797667 is a prime.

It is a super-2 number, since 2×148797731² = 44281529501496722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148797739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695210 + ... + 695423.

It is an arithmetic number, because the mean of its divisors is an integer number (37547118).

Almost surely, 2^148797731 is an apocalyptic number.

148797731 is a deficient number, since it is larger than the sum of its proper divisors (1390741).

148797731 is a wasteful number, since it uses less digits than its factorization.

148797731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390740.

The product of its digits is 296352, while the sum is 47.

The square root of 148797731 is about 12198.2675409256. The cubic root of 148797731 is about 529.9059177964.

The spelling of 148797731 in words is "one hundred forty-eight million, seven hundred ninety-seven thousand, seven hundred thirty-one".